Senior Process Engineer - Ranger Rehabilitation Project

Be part of a group that is safety driven and values inclusion

Great opportunity to work in one of the world’s unique sites, with the focus now shifting to comprehensive world-class rehabilitation whilst maintaining successful operation of a critical path asset

Work a 14:7 roster, living in Darwin, BIBO to Jabiru

We’re Finding Better Ways™ to provide materials the world needs, now and in the future. Our values – care, courage and curiosity – guide how we work and how we treat each other.

About the role

We are seeking an experienced Process Engineer to support the safe and effective operation of the Brine Concentrator as part of the Ranger Uranium Mine Rehabilitation Project.

This role plays a critical part in one of Australia’s most significant environmental rehabilitation programs, focused on long term protection of the surrounding Kakadu World Heritage Area. Working closely with site operations, maintenance, and technical teams, you will provide process engineering expertise to ensure compliant, reliable, and optimised management of high salinity process streams.

This is a site based technical role with genuine accountability and influence, suited to an engineer who values safety, environmental stewardship, and continuous improvement.

The role operates on 2 weeks on, 1 week off roster, with Darwin as the point of hire.

Reporting to the Senior Process Engineer onsite, you will be responsible for

Provide process engineering support and technical stewardship for the Brine Concentrator and associated water treatment systems

Defining and maintaining the Brine Concentrator operating envelope, control philosophy, and critical process limits

Ensuring regulatory compliance, managing process risk, and optimising performance across variable operating and seasonal conditions.

Monitor plant performance, identify process constraints, and support optimisation initiatives

Troubleshoot process issues including scaling, fouling, corrosion, and chemical management

Support safe operations in line with environmental approvals, site standards, and rehabilitation objectives

Contribute to risk assessments, incident investigations, and continuous improvement activities

Work collaboratively with Operations, Maintenance, Projects, and external service providers

Support trials, testing, and implementation of process improvements

Contribute to technical documentation, knowledge sharing, and capability development onsite

About you

A commitment to the safety of yourself and your team

Degree qualification in Chemical, Process, or Mechanical Engineering

Experience in process engineering, ideally within water treatment, brine management, or high salinity systems

Strong understanding of process safety, regulatory compliance, and risk management

Practical, site focused approach with the ability to work effectively in operational environments

Strong communication skills and the ability to work across multidisciplinary teams

C Class Drivers Licence

It would also be beneficial if you have:

Experience with BC plant or evaporator systems, mine water management, and site closure or rehabilitation projects

Strong capability in technology trials, plant performance improvement, and risk assessments (e.g. HAZOP), with comfort working in dynamic operating environments involving large‑scale water management

What we offer

Be recognised for your contribution, your thinking and your hard work, and go home knowing you’ve helped the world progress.

A work environment where safety is always the number one priority

A permanent position working directly for Rio Tinto

A competitive base salary reflective of your skills and experience with annual incentive program

Comprehensive medical benefits including subsidised private health insurance for employees and immediate family

Attractive share ownership plan

Company provided insurance cover

Extensive salary sacrifice & salary packaging options

Career development & education assistance to further your technical or leadership ambitions

Ongoing access to family-friendly health and medical wellbeing support

Leave for all of life’s reasons (vacation/annual, paid parental, sick leave)

Exclusive employee discounts (banking, accommodation, cars, retail and more)

Possible domestic relocation assistance

Where you’ll be working

Energy Resources of Australia Ltd (ERA) operated the Ranger Uranium Mine near the town of Jabiru in the Northern Territory, Australia, previously mining and producing uranium oxide. In January 2021, ERA ceased all mining and processing activities at Ranger after 40 years of operation with the focus now shifting to rehabilitation.

The Ranger Rehabilitation Project is committed to the rehabilitation of the Ranger Project Area to a standard that will establish an environment similar to the adjacent Kakadu National Park. In 2024, ERA entered into a Management Services Agreement (MSA) with Rio Tinto to manage the Ranger Rehabilitation Project, which will build on ERA’s existing rehabilitation work with Rio Tinto’s technical expertise in designing, scoping and executing closure projects. We remain committed to working with all key stakeholders, including the Mirarr People to complete this important rehabilitation work.

Applications close on 24th April 2026 (Rio Tinto reserves the right to remove advertised roles prior to this date).


About Rio Tinto

Rio Tinto is a leading global mining and materials company. We operate in 35 countries where we produce iron ore, copper, aluminium, critical minerals, and other materials needed for the global energy transition and for people, communities, and nations to thrive.

We have been mining for 150 years and operate with knowledge built up across generations and continents. Our purpose is finding better ways to provide the materials the world needs – striving for innovation and continuous improvement to produce materials with low emissions and to the right environmental, social and governance standards. But we can’t do it on our own, so we’re focused on creating partnerships to solve problems, create win-win situations and meet opportunities.

Respect and Inclusion

At Rio Tinto, we particularly welcome and encourage applications from Aboriginal and Torres Strait Islander people, women, the LGBTI+ community, mature workers, people with disabilities and people from different cultural backgrounds.

We are committed to an inclusive environment where people feel comfortable to be themselves. We want our people to feel that all voices are heard, all cultures respected and that a variety of perspectives are not only welcome – they are essential to our success. We treat each other fairly and with dignity regardless of race, gender, nationality, ethnic origin, religion, age, ****** orientation or anything else that makes us different.